DNS Checker: DNS Lookup & DNS Propagation Checker
DNS checker for fast DNS lookup and DNS propagation checking. See A, AAAA, CNAME, MX, NS, TXT, and SOA records from multiple resolvers.
How to use the DNS Checker
- 1Type a domain into the input.
- 2Pick a record type (A, AAAA, CNAME, MX, TXT, NS).
- 3Click Lookup to query public DNS.
- 4Read the results and TTLs.
What you can do with the DNS Checker
Check A and AAAA records.
See the IPv4/IPv6 addresses your domain resolves to right now.
Check MX records for email.
Confirm mail is routed to the right provider (Google, Microsoft, etc.).
Check CNAME records.
Verify subdomain redirects to a CDN or SaaS host.
Check TXT records (SPF, DKIM, verification).
Confirm domain ownership tokens and email-auth records are published.
Check NS records.
See which nameservers your domain is currently using.
DNS Checker FAQs
Why don't I see my new DNS record?+
DNS changes are cached. Most updates show up within minutes globally, but TTLs can hold old values for hours. Lower TTLs before a change for faster propagation.
What's a TTL?+
Time To Live — how long a resolver may cache a record. Lower means faster propagation, higher means less DNS traffic.
Do you store the domains I look up?+
No. Each query is a one-shot public DNS request; nothing is logged.
What's the difference between A and CNAME?+
A points to an IP address. CNAME points to another hostname. Use A at the apex (root) and CNAME for subdomains pointing to platforms.
Why are MX records showing a priority number?+
It controls failover order — lower numbers are tried first.
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